American Contact Lens Service, Inc. strives to make RGP contact lens fitting easy, profitable and timely.  We are dedicated to helping eyecare professionals build a substantial contact lens practice and offer quality and comfortable lenses for their patients.  "A lens is not a lens until someone can wear it!"
Spherical Gas Perm Contact Lenses
* Choose base curve according to your flattest "K"
* Choose diameter by considering palpebral fissure
* Evaluate your fluorescein patterns
* Or call us with your "K's" and refraction
Toric Gas Perm Contact Lenses
* Choose base curve by the flattest toric base to match the flattest corneal meridian
* Do not order steeper than the steepest meridian
* If toric trials are available,over-refract for power
  This will determine the need for back or bi-toric
* Depending on palpebral fissures, most minus torics work well in 8.6 mm. to 9.2 mm.
  diameters
* Or call us with your "K's" and refraction
Bifocal Gas Perm Contact Lenses
* Choose base curve according to your flattest "K"
       (Similar to fitting single vision, spherical lenses)
* Alignment fitting lenses that fill the fissure is the overall goal
* To best position a bifocal, lower lid should be tangent or above the lower visible iris when
  eyes are in primary gaze
* Add powers are from +1.00 D. to +2.50 D. for aspheric designs
   Add powers are from +1.00 D. to +5.00 D. for translating designs
* Fluorescein patterns should be evaluated the same as sperical single vision lenses
* Or call us with your "K's" and refraction, palpebral fissure, and position of lower lid in
  relationship to lower limbus.
Keratoconus Gas Perm Contact Lenses
* Begin with trial lens of 48.00 D., going steeper or flatter to obtain proper fluorescein
  pattern
* Fluorescein pattern should reveal a "touch area" which appears as a horseshoe and
  dot (incomplete bullseye)
* Lens must center
* Over-refract over best fitting trial lens to determine final power
* Diameters range from 7.0 mm. to 9.5 mm. with 90% being between 8.0 mm. to 9.0 mm.
American Contact Lens Service, Inc. can provide you with lens design charts, parameter change effects tables, fluorescein evaluation sheets and loaner trial lenses for every design, and all of the personal consultation you need.  You can also send us your topography to help with fitting the more difficult contact lens patients.
2003 American Contact Lens Service, Inc.